@Tim Campbell ; you're the man, i think the thread starter get the "idea" very well @Thread Starter: you might want to consider the Canon 200mm f/2.8 L (non IS), is cheap, light & sharp and works alright on indoors (around $800) or a second hand can...
yes say you shoot in RAW which generate about 20-30MB each files on 18MB sensorif your "memory card" write speed is "only" 30MB/sec how do you expect to write (say) 3 files on burst speed? thus your camera will "stall" and waiting for the memory car...
first, we study your camera your camera burst speed is around 6-7 frame per second on RAW image, but this one is also depends on memory card type that you use. if budget is no limit, you'll need a "fast" memory card which can write data on 90 - 95MB/...
